<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <title>欢迎</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f0f4f8;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .welcome-container {
            background-color: #ffffff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            text-align: center;
        }
        h1 {
            color: #333;
        }
    </style>
</head>
<body>
    <div class="welcome-container">
        <h1 th:text="${message}"></h1>
    </div>
</body>
</html> 